When they came across the Walla Wallas, Chief Yellept wanted them to stay in the area for awhile.  He wanted them to meet their friends and neighbors.  Lewis and Clark accepted this invitation.  The Chief presented the captains with firewood and roasted fish.  Chief Yellept gave Clark a white horse, and in return Clark gave the chief his sword.  Many of the Walla Wallas needed medical attention, and were happy to have York around. That night about three hundred men and women danced to the fiddle.  On April 30, 1806 the Corps left the Walla Wallas.  After a couple of days, a couple of the Walla Wallas caught up to them just to return a steel trap.  Lewis and Clark both thought that these were the most hospitable, honest, and sincere people that they had met on the expedition.  The Walla Wallas lived where Washington is today.
 

Sacagawea
Alana J. White
1997